Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.We are seeking a Principal Software Engineer to join the Elasticsearch Performance team. In this role, you will lead architectural and code-level performance engineering initiatives. Your goal is to drive the continuous optimization and predictability of Elasticsearch performance, partnering with area-specific teams to unlock the full potential of our software.What You Will Be DoingOwning core performance engineering initiatives from architecture to production, focusing on the delivery of high-impact optimizations. Leading the technical design, plan,



and execution for major architectural and code-level performance improvements.Developing foundational performance models and methodologies for complex, distributed systems.Driving optimization strategies to ensure Elasticsearch remains performant, predictable, and scalable in diverse environments.Ensuring robust performance benchmarks and regression detection for both stateful and stateless (Serverless) architectures.Collaborating across the company to embed performance-first thinking into new features from the outset.Drive automation efforts by designing and building AI-assisted optimization harnesses that streamline profiling, hypothesis testing, and benchmarking.Mentoring and coaching other engineers, fostering a culture of technical excellence and performance-aware development.What You BringYou have deep knowledge of Java internals and JVM memory management. You can write code that is high-performance, thread-safe, and lock-free. flamegraphs, JMH, Rally), identifying performance regressions,

📌 Principal Software Engineer (Madrid)
🏢 Elastic
📍 Madrid